What is the total cost of processing a K-1 fiancee visa?

Answer by U.S. Immigration Legal Advisors in Bangkok, Thailand: While these costs will change from time to time as of this writing the costs are: Department of Homeland Security application fee: $535.00, medical exam/vaccination fee: $300.00 approx., Embassy interview fee: $275.00, our firm’s “U.S. Immigration Legal Advisors” fee: $1,695.00, for a total of $2,805.00